Could magnets be used for interstellar propulsion?

Feb 01, 2026 Last reply: 5 months ago 29 Replies

You could say that, *because* it has a (non-zero) magnetic field (not vice-versa). An object is not a magnet /per se/.

Not enough.

No, that's nonsense. The best explanation that we have for that is _gravitation_. Gravitation is NOT the same as magnetism.

Terra (Earth) orbits the barycenter of the Sol System because it formed from a rotating planetary disk. That disk was rotating because it formed from the rotating part of a molecular cloud at the same time as Sol (the Sun) formed; it was what was left over from the star's formation (the star formed because that part of the cloud had cooled enough by emitting radiation, and was dense enough so that gravitation caused it to collapse on itself; the collapse caused its density to increase further, and its temperature to increase again, eventually that much that nuclear fusion became possible and likely). That piece was rotating, because small imbalances in mass (perhaps supported by a nearby supernova) cause particles of a molecular cloud to move in different directions, and when they become too close, they begin to orbit each other (or rather their common barycenter) due to gravitation.

This is not just a story or a model anymore because we can observe it in the formation of other stars and their planetary systems.

F'up2 sci.astro

Utter nonsense.

[I hope this is just sarcasm, not due to ignorance of basic physics.]

No. There are other reasons to worry about magnetic pole reversal, for example increased exposure to the solar wind during the time that it happens.

No. Geomagnetic reversals have happened several times already, and there is no reason for and no evidence of an associated reversal of orbital velocity.

formatting link

Neither of these assumed effects is going to happen.

If you have gotten the idea from one of the first (the first?) Superman movie that time would depend on the direction in which Earth is rotating: That's just fantasy.

Superman might be able to reverse time, but reversing the direction of rotation is then a consequence of that, and not the cause. Otherwise this scene is (yet another piece of) evidence of the author's ignorance of basic physics.

[You can see that Superman is fantasy, and not science-fiction, if you consider that Lois Lane is not cut in three pieces when he catches her without adapting to her falling speed first, a scene that was hilariously discussed by the friends at the beginning of an episode of "The Big Bang Theory" :-D]

F'up2 sci.physics

Correct.

Not really; it is in free fall, so it has no weight. But it has a large _mass_, ca. 5.97 * 10^24 kg.

It consists of a lot of iron and other chemical elements that we call "heavy" in astronomy (all chemical elements with an atomic mass larger than helium are called "heavy" or "metals" in astrophysics :))

That's such a nonsense, it's not even wrong.

There is no such thing.

That is not how it works.

NASA studies the geomagnetic field (but ISTM that NOAA studies it more), not what you are claiming.

formatting link

Check it yourself. You will find that you have misunderstood a lot of things in this regard:

formatting link

That is correct.

The motion of (the planet) Terra (Earth) around (the star) Sol (the Sun) is simply not *called* "rotation" (except by ignorant people).

It is called _revolution_ or _orbiting_: the curve that is described by Earth in its (translatory) motion around Sol more precisely, the barycenter of the Sol System) is called "orbit"; it is approximately an ellipse.

So *that* was probably meant in a text by NASA that you might have read.

F'up2 sci.astro

You need to stop being such a fuss budget.

I'll post what I want, where I want, the way I want, and youll like it.

Already proven.

The missing 2 hours caused a singular discontinuity in the spacetime fabric. Its all over your head.

What a silly claim. Reflector telescopes have mirrors. They can see magnetic storms on the sun. You need some schooling.

Too bad you can't prove anything.

Try again, maybe it will work.

That sounds awfully boring.

John Larkin Highland Tech Glen Canyon Design Center Lunatic Fringe Electronics

No; after I submit this correction, I will simply killfile you to prevent you from wasting my precious time further. May you die in ignorance.

You have not the slightest clue what you are babbling about.

formatting link

That does not mean that they reflect *magnetic fields*.

You have no clue what a magnetic field *is*.

No, they cannot. You do not know how telescopes work either.

I have studied Astrophysics at a *real-life* university (not Instagram University like you), stupid.

Wrong. You can only read this because the technology that you are using was designed based on the assumption that the theory of Maxwell's electrodynamics that I just sketched is fundamentally correct.

*PLONK*

F'up2 poster

You can post what you like. This is an unmoderated group. We don't have to like it, and we can and will ignore you if you don't have anything useful to say.

And what's your evidence that this discontinuity exists (or ever existed). The Old Testament is just a repeatedly copied ancient text. The copying process isn't error free.

It's you that needs the schooling. Optical telescopes can't see magnetic storms. They can see the optical signal from writhing loops of hot plasma which are informative about the magnetic fields that are driving the writhing

Nobody can ever prove anything to an ignorant skeptic.

Schooling an ignorant skeptic is a waste of effort. They don't want to learn.

Something about these two posters suggests to me that they are trolls.

Wait, Tom, JFTR. Didn't you say your plonking me? Plonk means you don't read my posts or reply to them anymore. It doesn't mean you keep up the conversation through 3rd hand replies.

Yeah, we know, you just had to play your "Im smarter than you" card. Reading wikipedia doesn't mean you "studied Physics". If thats so then I studied just as much with a GED as you. You really need to study how to stop being a horse's ass. And read usenet long enough to read some real netiqette, cuz everything you think you know about that is wrong.

It's fabric like cotton and spandex. Shut up or call the spacetime police.

I was not the one who brought up the bible. Your opinion about it is not important. Go argue about it with Bill in the religion groups. Tell them all about how you cant see sunspots with your telescope. Better yet, take a close look at them with your highly educated reflector.

You obviously never read a Old English Bible.

Then you better plonk me again, good buddy. It might take 6 or 8 times.

Also, boasting about "BSc Student at University of Bern" on his ResearchGate page doesn't make him a ohysicist qualified to pronounce on all the stuff he pretends to be an expert on.

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required